railway RRB JE (CBT I + CBT II) Mock Test 2024 Production Engineering (Manufacturing) Joining Welding
Which of the following is the function of hose pipes in the gas welding process?
1
Protects the eyes from harmful heat and ultraviolet rays
2
Supplies the gases from the pressure regulators
3
Mixes oxygen and acetylene in the correct proportion
4
Removes the oxide film and maintains a clean surface